JPS5931201Y2 - Illumination device in endoscope - Google Patents
Illumination device in endoscopeInfo
- Publication number
- JPS5931201Y2 JPS5931201Y2 JP4912176U JP4912176U JPS5931201Y2 JP S5931201 Y2 JPS5931201 Y2 JP S5931201Y2 JP 4912176 U JP4912176 U JP 4912176U JP 4912176 U JP4912176 U JP 4912176U JP S5931201 Y2 JPS5931201 Y2 JP S5931201Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- endoscope
- optical fiber
- prism
- illumination device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
【考案の詳細な説明】 本考案は側視用内視鏡に於ける照明装置に関する。[Detailed explanation of the idea] The present invention relates to an illumination device for a side-viewing endoscope.
内視鏡に於いて、体腔内を照明する手段は、送光用光学
繊維束によって行なわれているが、側視用の内視鏡に於
て光を側方に曲げる手段としては、送光用光学繊維束を
その儒曲げると、第1図に示す如く曲げた高さだげ内視
鏡頭部内の専有空間が大きくなると共に、曲折部から光
が外に漏れてしまうために先端から出る光量が少なくな
る欠点を有している。In endoscopes, the means for illuminating the inside of the body cavity is carried out by a light-transmitting optical fiber bundle, but in side-viewing endoscopes, the means for bending light laterally is by light-transmitting optical fiber bundles. When a bundle of optical fibers is bent, as shown in Figure 1, the height of the bend increases, which increases the exclusive space inside the head of the endoscope, and the amount of light emitted from the tip decreases because light leaks outside from the bent part. It has fewer drawbacks.
そこで、通常は第2図に示す如く真直く゛延ばした送光
用光学繊維束の先端面に直角プリズムを接続して光を曲
げているものであるが、これによると、プリズムによる
光のケラレにより、第2図に示す如く送光用光学繊維束
の中程の光しか利用できず、散開光が少なくなってしま
う欠点を有している。Therefore, as shown in Figure 2, a right-angle prism is usually connected to the tip end of a straight optical fiber bundle for light transmission to bend the light, but according to this, the vignetting of the light by the prism causes As shown in FIG. 2, this method has the disadvantage that only the light in the middle of the optical fiber bundle for light transmission can be used, resulting in less diffused light.
そこで本考案は上記の欠点を解決することを目的とし、
送光用光学繊維束端面かも発光する拡散光の拡散角もし
くはそれに近い角度だけ入光面を傾げた三角変形プリズ
ムのその入光面に送光用光学繊維束端面が合うようにそ
の先端を斜めに形成して密着させたことにより光の散開
を広くしたことを特徴とする。Therefore, the purpose of this invention is to solve the above drawbacks.
The tip of the optical fiber bundle for light transmission is tilted so that the end surface of the optical fiber bundle for light transmission is aligned with the light entrance surface of a triangular deformed prism whose light entrance surface is tilted by the diffusion angle of the emitted diffused light or an angle close to it. It is characterized by widening the spread of light by forming and adhering it closely.
次に本考案の一実施例を図面に従って説明する。Next, an embodiment of the present invention will be described with reference to the drawings.
まず、第6図I、IIによって本考案の原理を説明する
。First, the principle of the present invention will be explained with reference to FIGS. 6I and II.
送光用光学繊維束1の拡散光までとるには上記した理由
により第6図■に示すように送光用光学繊維束1の端面
より広い入光面を有する高さの高いプリズム3を用いな
げればならない。In order to capture the diffused light of the light transmitting optical fiber bundle 1, a tall prism 3 having a light incident surface wider than the end surface of the light transmitting optical fiber bundle 1 is used as shown in FIG. I have to throw it.
しかしこのようにするとプリズムが大きくなり、内視鏡
内に納めるプリズムとしては専有空間が広くなって不適
当である。However, if this is done, the prism becomes large and takes up a large space, making it unsuitable for use as a prism to be housed within an endoscope.
しかしこれによると送光用光学繊維束1端面かもの光は
プリズムによってAかうBの光となって全部照明光とし
て利用することができる利点がある。However, this method has the advantage that the light from the end face of the optical fiber bundle 1 for light transmission can be converted into A and B lights by the prism and can all be used as illumination light.
これは点線で示す如くもう1つプリズムを合わせたとき
のA′からBの光と同じである。This is the same as the light from A' to B when another prism is combined as shown by the dotted line.
そこで、第6図■に示す如く、角TPQを45として反
射面PQを形成し、この反射面PQを対称面としてPT
面がPR面に来るようにして入光面PRとして三角変形
プリズム2を形成する。Therefore, as shown in FIG.
A triangular deformed prism 2 is formed as a light incident surface PR so that its surface is aligned with the PR surface.
つまり発光の拡散角SPTだげ入光面を傾げて角TPR
だけ変形させた三角変形プリズム2として高さの低いプ
リズムとすることができる。In other words, by tilting the light incident surface by the diffusion angle SPT of light emission, the angle TPR
The triangularly deformed prism 2 deformed by the amount of the triangular shape can be made into a low-height prism.
そして入光面PRに合わせて送光用光学繊維束1の端面
ヲ斜めに形成して密着させた構造である。The end face of the light-transmitting optical fiber bundle 1 is formed obliquely in accordance with the light incident surface PR and brought into close contact with the light-transmitting optical fiber bundle 1.
このように構成することにより送光用光学繊維束1から
発光する光はA、Bの範囲に送出して照明光として全部
使用することができる。With this configuration, the light emitted from the light transmitting optical fiber bundle 1 can be transmitted to the ranges A and B and can be used entirely as illumination light.
従って第3図、第4図に示す如く側視型内視鏡や胃カメ
ラに用いることにより明るくかつ広い照明範囲を有する
照明装置とすることができる。Therefore, as shown in FIGS. 3 and 4, when used in a side-viewing endoscope or a gastrocamera, the illumination device can be bright and have a wide illumination range.
なお、上記した各角度は最適条件を示したものであって
必らずしも上記角度と一致してなくてもよく、それに近
い角度であってもよい。Note that each of the above-mentioned angles indicates an optimum condition, and does not necessarily have to match the above-mentioned angle, but may be an angle close to it.
また、第5図に示す如(三角変形プリズム20反射面を
多少内側または外側に曲面としておくと出光面からの光
の散開を一層拡げることができる。Further, as shown in FIG. 5, if the reflecting surface of the triangular deformed prism 20 is curved slightly inward or outward, the light from the light emitting surface can be spread out even more.
以上の本考案によると、送光用光学繊維によって送られ
て来た光の拡散光を無駄熱(広く取ることができるため
に広い範囲を均等に照射することができると共に高さの
低いプリズムとすることができるために内視鏡頭部の専
有空間を少なくすることができる利点を有する。According to the present invention described above, the diffused light transmitted by the light transmitting optical fiber can be used as waste heat (waste heat). This has the advantage that the space occupied by the head of the endoscope can be reduced.
第1図は従来例を示す説明図、第2図はプリズムのクラ
ツを説明する説明図、第3図は本考案の内視鏡頭部の要
部断面図、第4図は胃カメラに用いた場合の要部断面図
、第5図はプリズムの反射面を曲面とした実施例の説明
図、第6図I、IIは本考案の原理を説明する説明図で
ある。
1・・・・・・送光用光学繊維束、2・・・・・・三角
変形プリズム。Fig. 1 is an explanatory diagram showing a conventional example, Fig. 2 is an explanatory diagram explaining the structure of the prism, Fig. 3 is a sectional view of the main part of the endoscope head of the present invention, and Fig. 4 is an explanatory diagram showing the main part of the endoscope head of the present invention. FIG. 5 is an explanatory diagram of an embodiment in which the reflecting surface of the prism is a curved surface, and FIGS. 6 I and II are explanatory diagrams illustrating the principle of the present invention. 1... Optical fiber bundle for light transmission, 2... Triangular deformed prism.
Claims (1)
もしくはそれに近い角度だけ入光面を傾げた三角変形プ
リズムのその入光面に送光用光学繊維束端面が合うよう
にその先端を斜めに形成して密着させたことを特徴とす
る内視鏡に於ける照明装置。 2 三角変形プリズムの反射面を曲面とした実用新案登
録請求の範囲第1項記載の内視鏡に於ける照明装置。[Claim for Utility Model Registration] 1. Optical fiber bundle for light transmission on the light entrance surface of a triangular deformed prism whose light entrance surface is tilted by the angle of diffusion of the emitted diffused light or an angle close to it. An illumination device for an endoscope, characterized in that its tip is formed diagonally so that the end faces meet and are brought into close contact. 2. An illumination device for an endoscope according to claim 1, in which the reflective surface of the triangularly deformed prism is curved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4912176U JPS5931201Y2 (en) | 1976-04-19 | 1976-04-19 | Illumination device in endoscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4912176U JPS5931201Y2 (en) | 1976-04-19 | 1976-04-19 | Illumination device in endoscope |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52140286U JPS52140286U (en) | 1977-10-24 |
JPS5931201Y2 true JPS5931201Y2 (en) | 1984-09-05 |
Family
ID=28508313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4912176U Expired JPS5931201Y2 (en) | 1976-04-19 | 1976-04-19 | Illumination device in endoscope |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5931201Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7672713B2 (en) * | 2002-06-19 | 2010-03-02 | Infraredx, Inc. | Multi-channel catheter tip |
US7742805B2 (en) * | 2003-09-05 | 2010-06-22 | Infraredx, Inc. | Optical catheter with dual-stage beam redirector |
-
1976
- 1976-04-19 JP JP4912176U patent/JPS5931201Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS52140286U (en) | 1977-10-24 |
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